#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <math.h>

int main() {
    int a = 0;
    int b = 0;
    while (~scanf("%d %d", &a, &b))
    {
        float c = 0;
        c = a / (float)pow(b / 100.0, 2);
        if (c < 18.5)
        {
            printf("Underweight\n");
        }
        else if (c <= 23.9)
        {
            printf("Normal\n");
        }
        else if (c <= 27.9)
        {
            printf("Overweight\n");
        }
        else
        {
            printf("Obese\n");
        }
    }
    return 0;
}